Malicious PDF — malware analysis report

Static analysis result for SHA-256 7afad34680a8150a…

MALICIOUS

PDF

87.0 KB Created: 2021-06-06 13:27:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 94bf30256c63071d1e0a1e74cb452a77 SHA-1: 0e29cc1f4638d09ca3e331110d6949b5d21c30d4 SHA-256: 7afad34680a8150ac20b9e96a736500a614dbbb9252919c173d9620233ebcf86
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://mezovuduw.ru/123?utm_term=derivation+of+simple+bending+equation+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412173/normal_6041305bc5424.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446490/normal_606a13aff19df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369327/normal_606bf787c6e81.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366011/normal_603ebed4e4330.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389603/normal_603d8b0de3e5e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407788/normal_602c75691a41a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451927/normal_5ff222b25e187.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443810/normal_604baf88ef78b.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4391903/normal_60b522b6d5f06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454303/normal_60138ac7c11d0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://uploads.strikinglycdn.com/files/f02646ba-d865-4fdb-82fe-f1ad516a39c8/how_much_do_lawyers_charge_for_contracts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc6ab6e0-5764-4e07-9a65-e6208be95e7f/79400536948.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64127ac5-ee25-47f2-b898-044005864dab/ic_756_pro_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f76290d1-4d01-409e-8974-172480bbdca4/surah_al_quran_30_juzuk_full.pdfIn PDF document text
    • http://sorawako.pbworks.com/f/bunopoboribizi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4c09e1b-c2ff-4d09-af7d-870037f9325b/ritadefixisata.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28ff5176-481b-49a4-9364-1f66a934cb86/how_do_you_cook_chicken_in_a_airfryer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e274a20-d1ac-4031-98ad-d3de564ab9b8/how_to_build_a_tiny_house_on_wheels_step_by_step.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d82ed4b-eb12-49b5-a065-0e3e2e7d4583/what_is_other_words_for_not_clear.pdfIn PDF document text
    • http://zalemofe.pbworks.com/f/ayyappa_swamy_hd_photos_download.pdfIn PDF document text
    • http://fiwonotexo.pbworks.com/w/file/fetch/144678990/driver_webcam_axioo_neon_hnm_windows_7.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000102f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F1 5688 bytes
SHA-256: 0057a586511369a2a25ed922473225bd6023e2cc11bfee3c38f38c9da92b19b6
font_01_sfnt_off00011627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11627 6148 bytes
SHA-256: 0b38f6fd5e0b54bfa22d5adee1cfe00629fe134100fc7cfc1ad14a2ab7974207
font_02_sfnt_off00012607.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12607 11276 bytes
SHA-256: f6dd9cefc20d1d4346bb38d8884bfc4c9d16ca93b9d41158f535c97da3fc12ad